Frost Dates for 56567 — New York Mills, Minnesota

Half of springs at New York Mills, MN see their last 32°F night by May 10; only one in ten is past it by April 28, and one in ten still has one after May 24. Planting tender crops after May 16 leaves a 30% risk of a frost on them, after May 20 20%, and after May 24 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 37% of the 142 Minnesota stations behind this site's ZIP pages.

In fall the first 32°F night comes by September 29 in half of years, as early as September 17 one year in ten, and holds off past October 11 one year in ten. A hard freeze of 28°F follows 11 days later, around October 10; in spring the one-in-ten date for 28°F is May 15, 9 days before the 32°F one. The freeze-free season lasts 141 days in a typical year, shorter than at 75% of the 142 Minnesota stations; it reaches 158 days one year in ten and falls short of 121 one year in ten. On average 184 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 11 days longer, to about May 21, and return around September 21. Severe cold of 16°F or below comes every winter, usually between November 9 and April 5.

July is the warmest month at New York Mills, MN, averaging 79°F by day and 58°F at night; January is the coldest at 17°F and -2°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to August the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 82% of years.

Warmth for growing adds up to 1,948 growing degree days a year (base 50°F), fewer than at 85% of the 142 Minnesota stations. 31% of them (597) have built up by the end of June, and July adds the most, 573. Precipitation totals 26.8 inches a year, most in July (4.9") and least in January (0.4"); May to September bring 70% of it.

The nearest other station, Ottertail, MN, 11 miles southwest of New York Mills, has a last frost 5 days earlier (May 5), a first frost 6 days later (October 5), a season 12 days longer.

The first measurable snow (0.1 inch or more) in New York Mills usually arrives around October 29, and the last of the season around April 13. Those are the middle dates across the winters of 1991–2020 at New York Mills, MN, 0.8 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 27 days after the last snow.

ZIP 56567 is under a mile from New York Mills, MN, which stands at 1,406 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 56573 (Perham). The 2023 USDA Plant Hardiness Zone Map lists ZIP 56567 in zone 4a, the band where the coldest night of the year averaged -30 to -25°F (-34.4 to -31.7°C) over 1991–2020; a zone describes winter lows, not frost dates.